The iSimple HDRT Peripheral HD Radio Tuner is an auxiliary input adapter designed to work with the PXAMG or CONNECT interface. It allows for easy access to HD Radio signals, providing high-quality audio and improved reception in your vehicle. With a 12V input voltage, this tuner offers a seamless integration into your existing car electronics system, enhancing your listening experience with clear and crisp sound quality. New in the box never used. Bought this 4 years sat in my garage during that time. Never got around to install in my 2007 es350 Lexus. I know it will not work without a PXAMG or Connect interface some sure you have that. Got a different car 6 months and don't need this anymore.